Skip to main content

Dr. Hayssen is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Connect with other colleagues in the same hospital or clinic
  • Search all U.S. specialist profiles and refer a patient
  • Read the latest clinical news and earn CME/CEU credits

See Dr. Hayssen's full profile

Already have an account?

Summary

  • Dr. Theresa Hayssen is a colorectal surgeon in Brookfield, WI and is affiliated with multiple hospitals in the area, including Ascension Southeast Wisconsin Hospital - Franklin Campus, Ascension Southeast Wisconsin Hospital - St. Francis Campus, Ascension Southeast Wisconsin Hospital - Ascension Southeast Wisconsin Hospital - Elmbrook Campus. She received her medical degree from Southern Illinois University School of Medicine and has been in practice 25 years. She is experienced in colorectal surgery, colorectal cancer surgery, inflammatory bowel disease surgery, and proctology.

Education & Training

  • Spectrum Health/Michigan State University
    Spectrum Health/Michigan State UniversityResidency, Colon and Rectal Surgery, 1997 - 1998
  • Southern Illinois University
    Southern Illinois UniversityResidency, Surgery, 1992 - 1997
  • Southern Illinois University School of Medicine
    Southern Illinois University School of MedicineClass of 1992

Certifications & Licensure

  • WI State Medical License
    WI State Medical License 1998 - 2025
  • MI State Medical License
    MI State Medical License 1997 - 1998
  • IL State Medical License
    IL State Medical License 1992 - 1997
  • American Board of Colon and Rectal Surgery Colon & Rectal Surgery
  • American Board of Surgery Surgery

Awards, Honors, & Recognition

  • Super Doctor SuperDoctors.com

Clinical Trials

Publications & Presentations

PubMed

Hospital Affiliations